20408412

素因数分解:

$2^2\times 3^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1\times {\mathrm{197}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 48898080

約数和(自身を除く): 28489668

約数列:

[1, 2, 3, 4, 6, 12, 89, 97, 178, 194, 197, 267, 291, 356, 388, 394, 534, 582, 591, 788, 1068, 1164, 1182, 2364, 8633, 17266, 17533, 19109, 25899, 34532, 35066, 38218, 51798, 52599, 57327, 70132, 76436, 103596, 105198, 114654, 210396, 229308, 1700701, 3401402, 5102103, 6802804, 10204206, 20408412]

約数ペア:

[(1, 20408412), (2, 10204206), (3, 6802804), (4, 5102103), (6, 3401402), (12, 1700701), (89, 229308), (97, 210396), (178, 114654), (194, 105198), (197, 103596), (267, 76436), (291, 70132), (356, 57327), (388, 52599), (394, 51798), (534, 38218), (582, 35066), (591, 34532), (788, 25899), (1068, 19109), (1164, 17533), (1182, 17266), (2364, 8633)]